Well, "Supernatural" fans, seven seasons into our favorite show, we've finally reached the unicorns-and-clowns episode. This week we'll see the Winchester boys return to Kansas to investigate Plucky Pennywhistle's Magical Menagerie, a Chuck E. Cheese type of children's establishment where kids' worst fears are coming to life.For Sam, that means getting his butt kicked by some violent clowns. We sat down with Jared Padalecki and Jensen Ackles last week on set to get the scoop on this episode. "It's not just like oh, it's a cute beating," Jared tells us. "It's a whoopin'. It took over a day to film us fighting through all different parts, myself and two clowns. It was a lot of fun, but I couldn't walk for like two days [after], because it was so labor intensive, getting up, getting down, jumping on this... I think I'm tougher than I am, so I like to pretend I'm doing the hard stuff....